СИСТЕМА ECD КОНТАКТЫ ECM

A01BDQ0E09

Tech Tips

Each ECM terminal's standard voltage is shown in the table below.

In the table, first follow the information under "Condition". Look under "Symbols (Terminal No.)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".

Use the illustration above as a reference for the ECM terminals.

Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
BATT (B7-2) - E1 (D3-7) B-R - BR Battery (for measuring the battery voltage and for the ECM memory) Always 9 to 14 V
IGSW (B9-9) - E1 (D3-7) B-R - BR Ignition switch Ignition switch ON 9 to 14 V
+B (B9-1)- E1 (D3-7) B-R - BR Power source of ECM Ignition switch ON 9 to 14 V
MREL (B9-8)- E1 (D3-7) G-Y - BR MAIN relay Ignition switch ON 9 to 14 V
MREL (B9-8)- E1 (D3-7) G-Y - BR MAIN relay 10 seconds elapsed after ignition switch OFF 0 to 1.5 V
VC (D1-18) - E2 (D1-28) L-B - Y-R Power source of sensor (a specific voltage) Ignition switch ON 4.5 to 5.5 V
VPA (B9-22) - EPA (B9-28) L - W-L Accelerator pedal position sensor (for engine control) Ignition switch ON, accelerator pedal fully released 0.6 to 1.0 V
VPA (B9-22) - EPA (B9-28) L - W-L Accelerator pedal position sensor (for engine control) Ignition switch ON, accelerator pedal fully depressed 3.0 to 4.6 V
VPA2 (B9-23) - EPA2 (B9-29) B - W-R Accelerator pedal position sensor (for sensor malfunction detection) Ignition switch ON, accelerator pedal fully released 1.4 to 1.8 V
VPA2 (B9-23) - EPA2 (B9-29) B - W-R Accelerator pedal position sensor (for sensor malfunction detection) Ignition switch ON, accelerator pedal fully released 3.7 to 5.0 V
VCPA (B9-26) - EPA (B9-28) W - W-L Power source of accelerator pedal position sensor (for VPA1) Ignition switch ON 4.5 to 5.5 V
VCP2 (B9-27) - EPA2 (B9-29) R-L - W-R Power source of accelerator pedal position sensor (for VPA2) Ignition switch ON 4.5 to 5.5 V
THA (D1-31) - E2 (D1-28) R - Y-R IAT sensor Idling, intake air temperature at 20°C (68°F) 0.5 to 3.4 V
THW (D1-19) - E2 (D1-28) R-W - Y-R ECT sensor Idling, engine coolant temperature at 80°C (176°F) 0.2 to 1.0 V
RTHW (B9-20) - E1 (D1-28) L-R - Y-R Engine coolant temperature (radiator) sensor Idling, radiator side engine coolant temperature -20 to 80°C (-4 to 176°F) 0.5 to 4.5 V
STA (B9-7) - E1 (D3-7) R - BR Starter signal Cranking 6.0 V or more

#1 (D1-24) - E1 (D3-7)

#2 (D1-23) - E1 (D3-7)

#3 (D1-22) - E1 (D3-7)

#4 (D1-21) - E1 (D3-7)

G-R - BR

G-Y - BR

Y-B - BR

B-Y - BR

 Injector Idling

Pulse generation

(see waveform 2)
G1 (D3-23) - G- (D3-31) R - G Camshaft position sensor Idling

Pulse generation

(see waveform 4)
NE+ (D1-27) - NE- (D1-34) Y - L Crankshaft position sensor Idling

Pulse generation

(see waveform 4)
STP (B7-15) - E1 (D3-7) R-W - BR Stop lamp switch Ignition switch ON, brake pedal depressed 7.5 to 14 V
STP (B7-15) - E1 (D3-7) R-W - BR Stop lamp switch Ignition switch ON, brake pedal released 0 to 1.5 V
ST1- (B7-14) - E1 (D3-7) R-L - BR Stop lamp switch (opposite to STP) Ignition switch ON, brake pedal depressed 0 to 1.5 V
ST1- (B7-14) - E1 (D3-7) R-L - BR Stop lamp switch (opposite to STP) Ignition switch ON, brake pedal released 7.5 to 14 V
TC (B9-11) - E1 (D3-7) P - BR Terminal TC of DLC3 Ignition switch ON 9 to 14 V
W (B9-12) - E1 (D3-7) G-R - BR MIL MIL illuminated 0 to 3 V
W (B9-12) - E1 (D3-7) G-R - BR MIL MIL not illuminated 9 to 14 V
SPD (B7-17) - E1 (D3-7) P-L - BR Speed signal from combination meter Ignition switch ON, driving wheel is rotating slowly

Pulse generation

(see waveform 7)
SIL (B9-18) - E1 (D3-7) W - BR Terminal SIL of DLC3 Connect intelligent tester to the DLC3 Pulse generation
PIM (D3-28) - E2 (D1-28) P - Y-R Manifold absolute pressure sensor Apply negative pressure of 40 kPa (300 mmHg, 11.8 in.Hg) 1.3 to 1.9 V
PIM (D3-28) - E2 (D1-28) P - Y-R Manifold absolute pressure sensor Same as atmospheric pressure 2.4 to 3.1 V
PIM (D3-28) - E2 (D1-28) P - Y-R Manifold absolute pressure sensor Apply positive pressure of 170 kPa (1,275 mmHg, 50.2 in.Hg) 3.7 to 4.3 V
IREL (B9-10) - E1 (D3-7) R-L - BR EDU relay Ignition switch OFF 9 to 14 V
IREL (B9-10) - E1 (D3-7) R-L - BR EDU relay Idling 0 to 1.5 V
TACH (B9-4) - E1 (D3-7) B-Y - BR Engine speed Idling Pulse generation
PCR1 (D1-26) - E2 (D1-28) P - Y-R Common rail pressure sensor (main) Idling 1.3 to 1.8 V
GREL (B9-15) - E1 (D3-7) G - BR Glow plug relay Cranking 9 to 14 V
GREL (B9-15) - E1 (D3-7) G - BR Glow plug relay Idling 0 to 1.5 V
THF (D1-29) - E2 (D1-28) R-L - Y-R Fuel temperature sensor Ignition switch ON 0.5 to 3.4 V
ALT (D1-8) - E1 (D3-7) W - BR Generator (Alternator) duty ratio Idling Pulse generation
PCV+ (D1-2) - PCV- (D1-1) P - Y-R Suction control valve Idling

Pulse generation

(see waveform 1)
INJF (D1-25) - E1 (D3-7) Y-R - BR EDU Idling

Pulse generation

(see waveform 3)
VLU (D3-29) - E2 (D1-28) R-L - Y-R Throttle position sensor Ignition switch ON, throttle valve fully opened 2.8 to 4.2 V
VLU (D3-29) - E2 (D1-28) R-L - BR Throttle position sensor Ignition switch ON, throttle valve fully closed 0.3 to 0.9 V
LUSL (D3-4) - E1 (D3-7) B - BR Throttle valve duty signal Engine warmed up, racing engine

Pulse generation

(see waveform 6)
EGR (D3-9) - E1 (D3-7) B-W - BR E-VRV for EGR Ignition switch ON

Pulse generation

(see waveform 5)
EGLS (D3-33) - E2 (D1-28) P - Y-R EGR valve position sensor Ignition switch ON 0.3 to 1.3 V
CAN+ (B7-22)* - E1 (D3-1) L - BR CAN communication line Ignition switch ON

Pulse generation

(see waveform 8)
CAN- (B7-21)* - E1 (D3-1) W - BR CAN communication line Ignition switch ON

Pulse generation

(see waveform 9)
CANH (B7-24) - E1 (B7-1) B - BR CAN communication line Ignition switch ON

Pulse generation

(see waveform 8)
CANL (B7-23) - E1 (B7-1) W - BR CAN communication line Ignition switch ON

Pulse generation

(see waveform 9)

Tech Tips

*: Only for A/T


  1. Waveform 1


    1. A01BBWLE02

      Suction control valve signal

      Symbols (Terminal No.) PCV+ (D1-2) - PCV- (D1-1)
      Tool Setting 10 V/DIV., 5 msec./DIV.
      Condition Idling or cranking with warm engine

      Tech Tips

      The waveform varies depending on the suction control valve operation.

  2. Waveform 2


    1. A01BG6IE02

      Injector No. 1 injection signal

    2. Injector No. 2 injection signal

    3. Injector No. 3 injection signal

    4. Injector No. 4 injection signal

      Symbols (Terminal No.)

      (a) #1 (D1-24) - E1 (D3-7)

      (b) #3 (D1-22) - E1 (D3-7)

      (c) #4 (D1-21) - E1 (D3-7)

      (d) #2 (D1-23) - E1 (D3-7)
      Tool Setting 5 V/DIV., 20 msec./DIV.
      Condition Idling with warm engine

      Tech Tips

      The waveform varies depending on the injector injection.

  3. Waveform 3


    1. A01BBFYE02

      Injector injection confirmation signal

      Symbols (Terminal No.) INJF (D1-25) - E1 (D3-7)
      Tool Setting 2 V/DIV., 20 msec./DIV.
      Condition Idling with warm engine

      Tech Tips

      The waveform varies depending on the injector injection.

  4. Waveform 4


    1. A01BG6QE02

      Crankshaft position sensor signal

    2. Camshaft position sensor signal

      Symbol (Terminal No.)

      (a) NE+ (D1-27) - NE- (D1-34)

      (b) G1 (D3-23) - G- (E-31)
      Tool Setting 5 V/DIV., 20 msec./DIV.
      Condition Idling with warm engine

      Tech Tips

      The waveform varies depending on the engine revolution.

  5. Waveform 5


    1. A01BE0RE02

      E-VRV for EGR signal

      Symbols (Terminal No.) EGR (D3-9) - E1 (D3-7)
      Tool Setting 2 V/DIV., 1 msec./DIV.
      Condition Idling with warm engine

      Tech Tips

      The waveform changes depending on the electric vacuum regulating valve for EGR operation.

  6. Waveform 6


    1. A01BHR0E02

      Diesel throttle signal

      Symbols (Terminal No.) LUSL (D3-4) - E1 (D3-7)
      Tool Setting 1 V/DIV., 2 msec./DIV.
      Condition Warm engine with racing engine

      Tech Tips

      The waveform varies depending on the throttle valve operation.

  7. Waveform 7


    1. A01BE8PE03

      Vehicle speed signal

      Symbols (Terminal No.) SPD (B7-17) - E1 (D3-7)
      Tool Setting 5 V/DIV., 20 msec./DIV.
      Condition While driving the vehicle

      Tech Tips

      The wavelength becomes shorter as the vehicle speed increases.

  8. Waveform 8


    1. A01BBOLE02

      CAN communication signal

      Symbols (Terminal No.) CANH (D3-24), CAN+ (B7-22) - E1 (D3-7)
      Tool Setting 1 V/DIV., 10 msec./DIV.
      Condition Engine is stopped, ignition ON

      Tech Tips

      The wavelength becomes shorter as the CAN communication signal

  9. Waveform 9


    1. A01BGF1E02

      CAN communication signal

      Symbols (Terminal No.) CANL (D3-23), CAN- (B7-21) - E1 (D3-7)
      Tool Setting 1 V/DIV., 10 msec./DIV.
      Condition Engine is stopped, ignition ON

      Tech Tips

      The waveform varies depending on the CAN communication signal.